The quest for the elusive Higgs boson seemed over in April, when an unexpected result from an atom smasher seemed to herald the discovery of the famous particle -- the last unproven piece of the physics puzzle and one of the great mysteries scientists face today.
Researchers were cautious, however, warning that it would take months to verify the finding.
Their caution was wise.
Scientists with the Tevatron particle accelerator at Chicago's Fermilab facility just released the results of a months-long effort by the lab's brightest minds to confirm the finding. What did they find? Nothing.
"We do not see the signal," Dmitri Denisov, staff scientist at Fermilab, told FoxNews.com. "If it existed, we would see it. But when we look at our data, we basically see nothing."